1*a0db5952SSascha Wildner /*-
2*a0db5952SSascha Wildner * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3*a0db5952SSascha Wildner *
4*a0db5952SSascha Wildner * Copyright (c) 2012 Jukka A. Ukkonen
5*a0db5952SSascha Wildner * All rights reserved.
6*a0db5952SSascha Wildner *
7*a0db5952SSascha Wildner * This software was developed by Jukka Ukkonen for FreeBSD.
8*a0db5952SSascha Wildner *
9*a0db5952SSascha Wildner * Redistribution and use in source and binary forms, with or without
10*a0db5952SSascha Wildner * modification, are permitted provided that the following conditions
11*a0db5952SSascha Wildner * are met:
12*a0db5952SSascha Wildner * 1. Redistributions of source code must retain the above copyright
13*a0db5952SSascha Wildner * notice, this list of conditions and the following disclaimer.
14*a0db5952SSascha Wildner * 2. Redistributions in binary form must reproduce the above copyright
15*a0db5952SSascha Wildner * notice, this list of conditions and the following disclaimer in the
16*a0db5952SSascha Wildner * documentation and/or other materials provided with the distribution.
17*a0db5952SSascha Wildner *
18*a0db5952SSascha Wildner * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19*a0db5952SSascha Wildner * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20*a0db5952SSascha Wildner * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21*a0db5952SSascha Wildner * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22*a0db5952SSascha Wildner * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23*a0db5952SSascha Wildner * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24*a0db5952SSascha Wildner * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25*a0db5952SSascha Wildner * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26*a0db5952SSascha Wildner * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27*a0db5952SSascha Wildner * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28*a0db5952SSascha Wildner * SUCH DAMAGE.
29*a0db5952SSascha Wildner *
30*a0db5952SSascha Wildner * $FreeBSD: head/lib/libc/gen/dup3.c 326193 2017-11-25 17:12:48Z pfg $
31*a0db5952SSascha Wildner */
32*a0db5952SSascha Wildner
33*a0db5952SSascha Wildner #include "namespace.h"
34*a0db5952SSascha Wildner #include <unistd.h>
35*a0db5952SSascha Wildner #include <fcntl.h>
36*a0db5952SSascha Wildner #include <errno.h>
37*a0db5952SSascha Wildner #include "un-namespace.h"
38*a0db5952SSascha Wildner
39*a0db5952SSascha Wildner int __dup3(int, int, int);
40*a0db5952SSascha Wildner
41*a0db5952SSascha Wildner int
__dup3(int oldfd,int newfd,int flags)42*a0db5952SSascha Wildner __dup3(int oldfd, int newfd, int flags)
43*a0db5952SSascha Wildner {
44*a0db5952SSascha Wildner int how;
45*a0db5952SSascha Wildner
46*a0db5952SSascha Wildner if (oldfd == newfd) {
47*a0db5952SSascha Wildner errno = EINVAL;
48*a0db5952SSascha Wildner return (-1);
49*a0db5952SSascha Wildner }
50*a0db5952SSascha Wildner
51*a0db5952SSascha Wildner if (flags & ~O_CLOEXEC) {
52*a0db5952SSascha Wildner errno = EINVAL;
53*a0db5952SSascha Wildner return (-1);
54*a0db5952SSascha Wildner }
55*a0db5952SSascha Wildner
56*a0db5952SSascha Wildner how = (flags & O_CLOEXEC) ? F_DUP2FD_CLOEXEC : F_DUP2FD;
57*a0db5952SSascha Wildner
58*a0db5952SSascha Wildner return (_fcntl(oldfd, how, newfd));
59*a0db5952SSascha Wildner }
60*a0db5952SSascha Wildner
61*a0db5952SSascha Wildner __weak_reference(__dup3, dup3);
62*a0db5952SSascha Wildner __weak_reference(__dup3, _dup3);
63